Method and machine eor making- detonator connections



Jne 12, 1928.

J. M. OLlN ET AL METHOD AND MACHINE FOR MAKING DETONATOR CONNECTIONS Original Filed Dec. 30. 1922 2 Sheetsheet June 12, 1.028.

J. M. OLIN ET AL METHOD AND MACHINE FORMAKING DETONATOR CONNECTIONS 2 Sheets-Sheet Pupi Dec, 30, 1922 Ori min Patented June 12, 1928..

UNITED STATES PATENT OFFICE.

JOI-IN M. OLIN, VICTOR L. DAVIS, AND JOI-IN B. SMITH, OF ALTON, ILLINOIS, ASSIGNORS TO WESTERN CARTRIDGE COMPANY, OF EAST ALTON, ILLINOIS, A CORPORATION OF DELAWARE.

METHOD AND MACHINE FOR MAKING DETONATOR CONNECTIONS.

Original application tiled December 30, 1922, Serial No. 509,954. Patent No.4 1,626,118, dated April 26, 1927. Divided and this application filed January 28, 1925. Serial No. 5,395.

This invention relates to detonatorsand more particularly to t-hose of the electrically ignited type. This application is a division of application Serial Number 609,954, filed December 30, 1922, now Patent No. 1,626,118, granted April 26, 1927.

One of the objects of this invention 'is to provide improved processes and mechanisms, whereby the detonators, and more particularly the igniter connections, may be made economically, with accuracy and in order to produce an article which will be reliable and simple.

Another object of this invention is lto provide an improved detonator and more par: ticularly improved igniter connect-ions therefor.

Further objects will appear from the detail description taken in connection with the accompanying drawings, in which:

Figure 1 is a sectional view of a detonator embodying this invention;

Figure 2 is a detail perspective view illustrating the attaching of the filament to the terminals and the plating of this filament and terminals;

Figure 3 is a` perspective View of the igniter plug .before assembling the filament;

Figure 4 is a plan showing the apparatus for attaching the filament to the terminals and plating the same;

Figure 5 is 'a section on line 5 5, Figure 4;

Figure 6 is a section on line 6 6, Figure Ll; and

Figure 7 is a perspective view showing the completed igniter.

Referring to the accompaying drawing, and more particularly to Figure 1, the detonator, as shown, comprises a shell l which may be of drawn metal and has charge components 2 and 3 of any improved composition and arrangement, and the upper end of this shell is beaded as shown at 4. In this shell are arranged the terminals 5 of the connections 6 which pass through a plug 7 formed on the connections and of a suitable composition, a satisfactory one being a mixture of sulphur and graphite. The connections are insulated wires which are stripped from Where they project through the plug and these connections are formed, as hereinafter described, to receive the filament 8. This filament may be ot' any suit-able resistance wire, a satisfactory one being of a eomf position of nickel, iron and copper. In order, however, to secure this filament to the terminals they are dipped in solder which alsoserves to coat or plate the filament as well as the connect-ions, in order to protect them against deterioration when in the shell. The plug and its terminals are secured within the shell by additional plugs 9 and 10 of sulphur and pitch, which serve to seal and cap the shell and the terminals therein. These plug components are poured into the shell so as to fiow around the connections, and it will be noted that the composition flows into the bead 4 so as to firmly secure and lock the parts together.

The plug 7 may be formed on the connections G by cast-ing the same in place on the connections. The protruding ends of the connections may then be stripped of their insulation to form the terminals which are then notched at their ends as shown in Figure 3. A method and apparatus for notching the terminals are fully described in the above-named application.

Referring to Figures 2 and 4 to 7 inclusive, 7 3 designates a solder pot, which is provided with molten solder, and on one side of this pot is supported a rcel 74; while on tlie'other side are the stationaryand movable parts 75 and 76, respectively, ot' a combined cutter and clamp, whereby a strand of' the filament wire 77 may be stretched across the pot and clamped on one side thereof.

Assuming the filament wire to be stretched over the solder and clamped as shown in Figure 2, the terminals 5 projecting from the plug 7 are placed in alined relation, with the notches in the terminals takingover the wire. The plug and terminals are now moved down, carrying the wire with them into the solder and thereby not only causing the wire to be soldered to the terminals, but also coating the wire as well as the terminals with a plating of the solder. It will be understood, of course, that the terminals are first dipped in a suitable flux before immersion into the solder; the solder can be of any suitable composition, such as a. lead tin alloy. After the wire has been soldered to the terminals, the plug and terminals are moved to the right, as the combined cutter and clamp 75--76 is opened, until 'the wire to the left of the terminals is in cooperation with, the cutter and clamp. The .latter then closed, thereby cutting oil the wire connected to the terminals and also clamping the wire in. stretched condition across the solder pot. lt for any reason it is desirable to retain a plurality oiteii'minals connected together onthe single filament' wire it will be obvious that the cutting ott ot the wire connected'to the terminals'as just described, can be postponed. in other words, the cuttingor severing ot the wire between completeddetonators may be accomplished at any desirable time.

Referring now to Figures 4 to 6 inclusive, the solder pot 73 is shown as provided with an electrical heating' element T8,and mounted on a suitable base 79 on which the reel fel may also be mounted. The wire 77 passes V through a groove 80j formed between two plates 81 on the base, and after passing over? the solder pot passes through a groove 82 between two plates 83 andv 84% on the base. The plate 8Ll: 'lias mounted thereon'a cutter blade 85, which cooperates with the cutting tace Soon the plate 83, and this cutter is normally helden the face 86 by a spring 87, while it is moved against the tension of the spring by a knob 88. It will be understood that theiilament wire is thin and very flexible, so that the end' of this wire be? comes wedged between the cutting laces in order to provide a clamp.

Pivoted on the base are a pfui oli counterweighted arms 89 and 9() which are held in proper position against stops 91 on the base. These arms are provided with tips 92, which are preferably of glassv in order to be transparent, and which are. spaced to provide a groove or passage 93, therebetween, which is of su'it'icient width to receive the terminals 5.

ln operation the termii'ials are placed in the groove 93 between thetips V92 and downward pressure is applied to the plug, thereloy causing the tips which are engaged by the plug to move downwardly with the terminals and wire into tliesolder, ln order to solder the wire to the, 'terminals and plate this wire as well :is the terminals, these tips, however, not only provide a guide securing the proper engagement of the terminals with the wire, but they also provide stops for limiting` the Clipping, movement, as this downward movement is arrested by engagement oit the armsSS and 90 with the top of the pot. Moreover since the tips are ol an 'insulating material, they will protectl the sul phur composition plug against heat and prevent it from burning, charring or melting. The grooves 80, 82 and 93 provide guides wherel y the wire may be readily restrung over the solder after a. lilament has been attached to the terminals. It will be understood, of course, that the ends of the wire are suitably trimmed oli'i as shown in Fig urer 1. This trimming may be accomplished atany suitable time and-,dees not necessarily have to be done the instant the terminals to which the filament has been attached'zufe removed from the soldering mech anism.

It will, therefore, be seen that this invcn tion accomplishes its objects. lilyr thc process and mechanism described the detonator can be made with. a minimum of" expense; however,the operations are so performed that each operation will ell'ectively secure its objects and accurately prepare the subject matter for the succeeding operation. A detonator is provided which is ot improved construction and which is not subject to deteriorating while itis coi'ivenient for use as well as shipment;V

ltv is obvious that various changes may be madein details without departing tron'rth'e spirit of' this invention; it is, therefore, to'be understood that this invention is not to be limited to the specific details shown and dcscribed. y f

Having thusy described the invention, what is claimed is l. ln the art of marking detonators, the process comprising, placing the terminals of `the igniter connections onthe filament, and

immersing the assemblage in solder.

2. In the art of" making dctonators, the process comprising,` placing the ioriricd terminals ofthe vignitei" connections over 'the filament, and innnersing the assemblage in solderi I 3. ln the art of making detonators, the process comprising.y placing the terminals ot the igniter connet'ztions on a filament wire, immersing the terminals and wire in solder, and severingY the filament forming portion from the wire. I

4. In the art et n'l'iilring detonalors,` the processcomprising, placing the terminals el the igniter connections on a stretched lilanient wire, and immersing the terminals and wire in solder.

5. In the art of making detonators, the process comprising, placing the terminals of the igniter connections on a wire stretched above the solder, and dipping the terminals and the wire into the solder.

G. ln the art oi?` making detonators, the

process comprising, placing the terminals of the igniter connections, projecting; through a plug thereon, on a filament wire, and immersin'g the terminals and wire in solder. t

7. ln the art oi making detonators, the process comprising, placing the terminals oi? the igniter connections, 3x.`ojecting through a plug thereon, .in alined relation on a. like Ill dii

lll)

ment wire, and inmiersing the terminals and wire in solder.

8. In the art of making detonators, the process comprising, fasteningl a stretched wire at one end, securing the igniter connection terminals to the wire, and shifting the connected terminals and wire in order to refasten the wire.k

9. In the art of making detonators, the process coi'nprising, fastening a stretched wire at one end, securing the igniter connection terminals to the wire, and shifting the connected terminals and wire in order to ref-asten and stretch another length of the wire.

l0. In the art ot' making detonators, the process comprising7 fastening a stretched wire at one end, securing the igniter connection terminals to the wire, and shifting the connected terminals and Wire in order to refasten and stretch another length of the wire while the length secured to the terminals is cut.

l1. In the art of making detonators, the process comprising, Yfastening a stretched wire at one end, placing the igniter connection terminals on the wire, dipping the terminals and wire in solder, and shifting the connected terminals and wire in order to retasten the wire and stretch another lengt-h of the wire.

12. In a machine for making igniter connections, the combination with a solder pot, of means adapted to stretch a filament wire over said pot, whereby the filament-receiving terminals may be placed on the wire and immersed vwith the terminals into the solder.

i3. In a machine for making igniter connections. the combination with a solder pot., of a. holder adapted to secure one end ot' afilament wire in order to stretch the same over said pot, whereby the filament-receiving terminals may be placed on the wire and immersed with the terminals into the solder.

14e. In a machine 'for making igniter connections, the combination with a solder pot, of means for guiding a filament. wire over said pot, whereby the filament-receiving terminals are adapted to be placed on the wire and immersed with the terminals into the solder.

l5. In a machine for making igniter connections, the combination with a solder pot, of means for guiding a filament wire over said pot, and means adapted to secure one end of said wire, whereby the filamentreceiving terminals are adapted to be placed on the wire and immersed with the terminals into the solder.

16. In a machine for making igniter connections, the combination with a solder pot, of a filament wire reel on one side of said pot, and a holder adapted to secure the wire on the other side of said pot.

17. In a machine for making igniter connections, the combination with a solder pot, of a holder adapted to releasably secure one end of a filament wire in order to stretch the same over` said pot.

18. In a machine for making igniter connections, the combination with a solder pot, of a holder adapted to releasably secure one end of a filament wire in order to stretch the same over said pot, and a cutter associated with said holder.

19. In a machine for making igniter connections, the combination with a solder pot, of a cutter adapted to sever a filament wire and hold the end thereof in order to stretch the wire over said pot.

20. In a. machine for making igniter connections, the combination with a solder pot, of a cutter adapted to sever a filament wire and releasably hold the end in order to stretch the wire over said pot.

21. In a machine for making igniter connections, the combination with a solder pot, ot means adapted to stretch a filament wire over said pot, and means for guiding the filament-receiving terminals on the wire.

22. In a machine for making igniter connections, the combination with a solder pot, of means adapted to stretch a filament wire over said pot, and means for alining the filament-receiving terminals With the wire.

23. In a machine for making igniter connections, the combination with a solder pot, of means adapted to stretch a filament Wire over said pot, and means for guiding the filament-receiving terminals in alined relation on the wire.

24. In a machine for making igniter connections, the combination with a solder pot, of means adapted to stretch a filament wire over said pot, and means adapted for movement towards said pot, for guiding the filament-r-eceiving terminals on the wire.

25. In a machine for making igniter connections, the combination with a. solder pot, of means adapted to stretch a filament wire over said pot, and means engageable by a plug on the connections adapted to guide the terminals projecting beyond the plug on t-he wire.

26. In a machine for making igniter connections. the combination with a solder pot, of means adapted to stretch a filament wire over said pot, and means arranged for movement towards said pot, and engageable by a plug on the connections, adapted to guide the terminals projecting beyond the plug on the Wire.

27. In a machine for making igniter connections, the combination with a solder pot, of a holder adapted to secure one end of a filament wire in order to stretch the same over said pot, and means for guiding the filament-receiving terminals on the wire.

28. In a machine for making igniter connections, the combination with a solder pot,

i nectons, t-he combination with', solder the ilamentmceving `terminals on the Wire.

of means for guiding a, filament Wire over In testimony whereof We aix your sig- 10 said, pot, and'means for guiding the lz mepiixsreceiving terminals on- Vtlfle'wre. natures this 6th defy of June, 1924.

29. In a machine for making igniter con JOHN M. OLIN;

JOHN B. SMITH.

pot, of means for guidingl a filament Wire In testimony whereof I affix my signature over said pot, means adapted to secure one this lllthrdiy ofAugust, 1924. end of `said Wire, and means for guiding VCTOR DAVIS;` y 

